2. ,
2.1. ( )
. , .
. 2.1.
, z.. .
DF1, DF2 ;
r1, r2 .
n1, n2 DF1, DF2.
DF1 n1. 1 n1 - 1 n, 2 n2 2 n. , :
DG2 = DG1.
DG2 = 2n. r2 . DF2 DG1 = 1n. r1 . DF1,
2n. r2 . DF2 = 1n. r1 . DF1.
:
(2n. r2 . DF2)1 = (1n. r1 . DF1)1
(2n. r2 . DF2)2 = (1n. r1 . DF1)2
...
(2n. r2 . DF2)z = (1n. r1 . DF1)z
:
(2n. r2 . DF2)i = (1n. r1 . DF1)i.
: DF1,DF2 0 (dF)
.
: .
(r - var), (r - const).
q(l)
:
. , ,
DG2 = DG1: =
z , , DF1, DF2 , :
1. .
. 2.2.
: ( F), r.
: ( F), r.
G2 = G1
.r.F = .r.F.
, , r - const, r = r.
.F = .F
= 5..10 /, = 10..20 /, F < F
2. .
G = G, .r.F = .r.F
@ ,
r.F = r.F.
r < r, F > F.
. 2.3.
. 2.4.
:
- ;
S ;
dm .
:
n S ;
|
|
s S .
s, n , l.
. 2.5.
, :
d P -
d T - , S
d R - ,
:
s, .
, .. dm.
d RS , ;
d T ;
- .
ds,
dRS.ds = dL
dT.ds = dLr
- , .. , .
(1)
. , .
(1) (2)
(2)
.